Langley Park: Late/Upper Aptian, Maryland
collected by R. Stanford
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Nodosauridae
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Propanoplosaurus marylandicus n. gen., n. sp.
Stanford et al. 2011
|
1 individual | |||||||||
| USNM 540686 (1 measurement) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Maryland | County: | Prince Georges |
| Coordinates: | 39.0° North, 77.0° West (view map) | ||||
| Paleocoordinates: | 32.9° North, 31.4° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Early/Lower Cretaceous |
| 10 m.y. bin: | Cretaceous 2-3 | ||
| Key time interval: | Late/Upper Aptian | ||
| Age range of interval: | 119.50000 - 113.00000 m.y. ago |
Stratigraphy
Lithology and environment
| Primary lithology: | fine,sideritic sandstone |
| Secondary lithology: | red claystone |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: "... and natural impressions in fine-grained, siderite-cemented sandstone laid down upon a thin (1-4mm) layer of deep-red claystone." p. 917. | |
| Environment: | fluvial-deltaic indet. |
Taphonomy
| Modes of preservation: | body,cast,mold/impression,trace |
| Degree of concentration: | dispersed |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | variable |
| Temporal resolution: | snapshot |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection methods: | surface (float),field collection |
| Reason for describing collection: | general faunal/floral analysis |
| Museum repositories: | USNM |
| Collectors: | R. Stanford |
Metadata
| Database number: | 124206 | ||
| Authorizer: | M. Uhen | Enterer: | M. Shalap |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2012-02-07 18:54:46 | Last modified: | 2023-10-16 13:32:39 |
| Access level: | the public | Released: | 2012-02-07 18:54:46 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 39855. | R. Stanford, D. B. Weishampel, and V. B. Deleon. 2011. The first hatchling dinosaur reported from the eastern United States: Propanoplosaurus marylandicus (Dinosauria: Ankylosauria) from the Early Cretaceous of Maryland, U.S.A. Journal of Paleontology 85(5):916-924 [M. Uhen/M. Shalap/M. Carrano] |